The interstellar object 3I/ATLAS has ignited debate on whether it's a rare comet from a distant star or an alien probe.
Live Science on MSN
'No easy explanation': Scientists are debating a 70-year-old UFO mystery as new images come to light
Two new peer-reviewed papers claim thousands of unexplained light flashes in vintage Palomar telescope images show ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback